Unmet Hours - RSS feedhttp://unmethours.com/questions/Question-and-Answer Resource for the Building Energy Modeling CommunityenMon, 17 Dec 2018 17:49:47 -0600OpenStudio failure to openhttp://unmethours.com/question/36265/openstudio-failure-to-open/I had OpenStudio working fine already six months ago. After unknowingly pitting "load library" against OS's refactoring and trying anything I could think of yesterday, I find that the program will no longer open. I have uninstalled and reinstalled multiple times--according to directions, too! I have removed a couple lines related to OpenStudio from the registry, but all to no avail. I have also tried relocating OSM files and related folders. I don't whether to call this more a Windows problem or an OpenStudio issue.
Here's some of what shows up in Event Viewer (there is more, if that will help), though I understand none of it.
Fault bucket 1958325407010196452, type 5
Event Name: AppHangB1
Response: Not available
Cab Id: 0
Problem signature:
P1: OpenStudioApp.exe
P2: 2.7.0.0
P3: 5bc42e57
P4: 9257
P5: 67246080
P6:
P7:
P8:
P9:
P10:
Attached files:
\\?\C:\Users\Duane\AppData\Local\Temp\WERD358.tmp.version.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD359.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD379.tmp.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD377.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERD397.tmp.txt
\\?\C:\Users\Duane\AppData\Local\Temp\WERD399.tmp.xml
C:\ProgramData\Microsoft\Windows\WER\ReportQueue\Critical_OpenStudioApp.ex_3b603812e0b5323e498266e062827531106bf4_2a7ef314_cab_3c32d3e4\triagedump.dmp
C:\ProgramData\Microsoft\Windows\WER\ReportQueue\Critical_OpenStudioApp.ex_3b603812e0b5323e498266e062827531106bf4_2a7ef314_cab_3c32d3e4\memory.hdmp
These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportArchive\Critical_OpenStudioApp.ex_3b603812e0b5323e498266e062827531106bf4_2a7ef314_1a22e605
Analysis symbol:
Rechecking for solution: 0
Report Id: 3eaaa5ab-6b00-413d-853d-2455a0b7edc7
Report Status: 268435456
Hashed bucket: 36e44eb40ae3d717fb2d5e94ff770be4
Cab Guid: 0duerstadMon, 17 Dec 2018 17:49:47 -0600http://unmethours.com/question/36265/OpenStudio Shading controls not workinghttp://unmethours.com/question/23801/openstudio-shading-controls-not-working/Hello! :D
I'm trying to get solar shading controls to work in OpenStudio and i've used the "Input Output reference" as guide. I want to model exterior blinds. The building is a two storey office building and i'm currently running with 1 thermal zone.
The problem is that the shading control have no effect on the results, it is completely ignored. I checked my warnings i found the following:
> GetSurfaceData: WindowProperty:ShadingControl: "SHADING CONTROL" is not referenced by any window.
So apparently my control is not referenced by any window. But according to sketchup and OpenStudio my controls are added to the windows, so something goes wrong somewhere. (See pictures below for documentation)
The applied shading settings veiwed in OpenStudio:
![image description](/upfiles/14919860617367978.png)
Example of one of the windows showing that the shading control is indeed added:
![image description](/upfiles/14919862086954274.png)
The shading control settings in SketchUP:
![image description](/upfiles/14919862178054066.png)
So does anyone know what is wrong and is this a fixable problem? :DKingoWed, 12 Apr 2017 03:45:19 -0500http://unmethours.com/question/23801/Electrochromic Windows in OpenStudio with more than two states.http://unmethours.com/question/36262/electrochromic-windows-in-openstudio-with-more-than-two-states/I'm wondering if there is a way to model electrochromic windows with more than two tint states in OpenStudio. I'm generating schedules for tint state using a separate program, so the windows would be controlled using a csv schedule. With energy plus I'd change the construction using the EMS, but not sure if/how to accomplish this with OpenStudio and more than two tint states.
AndyrewMon, 17 Dec 2018 17:07:00 -0600http://unmethours.com/question/36262/openstudio load library osm problemhttp://unmethours.com/question/36252/openstudio-load-library-osm-problem/In the helpful book, "Building Energy Modeling with OpenStudio," Fig. 2.26 shows many osm files, but I see only a few when I go to file and "load library." There are mostly DEER and 90_1 osm files available. I have searched "all over" my folders for them with no success.
I have found the *completed* PrimarySchool file in the book's supplemental materials, but even when I use github to bring in the prototype files, "load library" doesn't bring in the PrimarySchool osm file as I see it in the book's supplemental material.
If necessary I can just skip the exercise, but the book has otherwise been very useful in methodically learning Openstudio.
Item 5 on page 51 says this is supposed to work. I can imagine the ability to bring in osm material such as this is something I'd like to have in the future, too.duerstadSun, 16 Dec 2018 19:48:09 -0600http://unmethours.com/question/36252/What use to model radiatorhttp://unmethours.com/question/13335/what-use-to-model-radiator/ What object should I use to model radiators in a room? `ZoneHVAC:Baseboard:RadiantConvective:Water` or `ZoneHVAC:HighTemperatureRadiant`. In my case I have system with a boiler with a water loop to supply hot water to several radiators in several room.J MonteiroMon, 14 Dec 2015 09:33:21 -0600http://unmethours.com/question/13335/Humidity and Airflow Rate Control for Pool Spacehttp://unmethours.com/question/36203/humidity-and-airflow-rate-control-for-pool-space/Hi,
I'm trying to model a simple pool in my model by adding a latent and sensible load to the space. The space is conditioned by a Packaged Rooftop Heat Pump. I'm having problems controlling the humidity (60%) and airflow rate (5 ACH) of the space with this system. I don't know where I can specify the airflow rate and how to set up a humidity controller. Please help! I'm using OpenStudio.
JeaniejechanWed, 12 Dec 2018 11:50:38 -0600http://unmethours.com/question/36203/openstudio user input for residentialhttp://unmethours.com/question/36161/openstudio-user-input-for-residential/I am incredibly new at using OpenStudio and EnergyPlus. I am currently using OpenStudio to design a residential container house, which means BeOpt isn't an option for me. In the user inputs for the Space Type and Construction Set Wizard, the available building types and templates are those for commercial buildings. Is there a way to change that or is using the available options acceptable for residential types?
Sorry, I'm not from the US so I'm unfamiliar with the ASHRAE standards.patrick1751Tue, 11 Dec 2018 12:06:42 -0600http://unmethours.com/question/36161/Error while modeling radiant underfloor cooling systemhttp://unmethours.com/question/36197/error-while-modeling-radiant-underfloor-cooling-system/ Hello guys! I'm a student in Technical University in Crete and I've been struggling a couple of weeks in a project, in which I would like to model a radiant floor cooling system using "Low Temperature Radiant Variable Flow" and I'm getting the following error every time:
** Severe ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
** ~~~ ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW
** Severe ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
** ~~~ ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 1
** Severe ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
** ~~~ ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 2
** Severe ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
** ~~~ ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 3
** Severe ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
** ~~~ ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 4
** Severe ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
** ~~~ ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 5
** Severe ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
** ~~~ ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 6
** Severe ** Hydronic radiant systems may not be autosized without specification of nodes or schedules.
** ~~~ ** Occurs in ZoneHVAC:LowTemperatureRadiant:VariableFlow (heating input) = LOW TEMP RADIANT VAR FLOW 7
** Fatal ** GetLowTempRadiantSystem: Errors found in input. Preceding conditions cause termination.
...Summary of Errors that led to program termination:
..... Reference severe error count=8
..... Last severe error=Hydronic radiant systems may not be autosized without specification of nodes or schedules.
I have already seen this post: https://unmethours.com/question/19482/error-when-controling-a-low-temperature-radiant-floor/ but I couldn't solve my error. Could somebody help me please?
I'm attaching my .osm and weather file .epw in a .zip here: http://www.mediafire.com/file/281lrnz1tnqhgkg/radiant_model.zip/file
Thank's in advance!kkotenidisGRtucWed, 12 Dec 2018 08:37:35 -0600http://unmethours.com/question/36197/Which values should I set in the design cooling/heating supply air temperatures so I get less than 300 unmet hours for heating?http://unmethours.com/question/36194/which-values-should-i-set-in-the-design-coolingheating-supply-air-temperatures-so-i-get-less-than-300-unmet-hours-for-heating/I am trying to set a baseline model according to ASHRAE 90.1.2010 in OpenStudio using system7 VAV with reheat. In the HVAC tab, I chose the ''supply air to room air temperature'' method. Running the model using the default values (14oC for cooling and 40oC for heating, zone supply air temperature difference=11.1oC) the unmet hours for heating exceed the value of 300.
The thermostat schedules in the thermal zones are 25oC (cooling) and 21oC (heating) during occupation. I can think of the following possible solutions:
- zone cooling/heating design supply air temperatures 25oC and 21oC respectively with delta T=11.1
- zone cooling/heating design supply air temperatures 25-11.1=13.9oC and 21+11.1=32.1oC respectively with delta T=11.1. IfigeneiaWed, 12 Dec 2018 04:07:53 -0600http://unmethours.com/question/36194/open slowly and end up with "openstudio results measure not found"http://unmethours.com/question/36193/open-slowly-and-end-up-with-openstudio-results-measure-not-found/everytime i launch openstudio, it load slowly and end up with a pop-up window says "openstudio results measure not found","could not find or download openstudio results measure"
Version: 2.7.0
![image description](http://) Johnny_LeeWed, 12 Dec 2018 03:41:18 -0600http://unmethours.com/question/36193/How can one model inverter split-ACs in open studiohttp://unmethours.com/question/36189/how-can-one-model-inverter-split-acs-in-open-studio/ I want to model split AC with inverter technology in the OpenStudio.NidhiraijainWed, 12 Dec 2018 02:25:06 -0600http://unmethours.com/question/36189/Building shading not applied consistentlyhttp://unmethours.com/question/36125/building-shading-not-applied-consistently/Hi all, I'm doing some simulation on an apartment building.
I've done my model in Sketchup - OS, I have modelled some canopies and balconies attached to the building.
During some simulation the shading hasn't been applied resulting in some substantial overheat of some spaces.
I've re-tested with a larger shading surface in front of the whole building that would block most of the direct sun-light and the simulation applied the shading.
I've then removed the vertical surface and left only canopies and balconies and the shading started to work as it should.
Have you ever had some mis-behaving of the shading?
What would be the best way to have OS using and allowing for the shading?
Furthermore, if I hit ''Purge unused objects'' under Building/Shading, OS gets rid of all the shading surfaces. This is not something I would expect to happen since all the shading surfaces are part of Shading groups.
cheersmatteo-gSun, 09 Dec 2018 16:43:19 -0600http://unmethours.com/question/36125/Tankless Electric Water Heaterhttp://unmethours.com/question/24340/tankless-electric-water-heater/I would like to model tankless electric water heaters in Openstudio for a LEED project but I am not even sure where to get started. Any help would be appreciated.
ThanksgabeparkMon, 08 May 2017 15:18:15 -0500http://unmethours.com/question/24340/Controlling the zone thermostat with thermal comfort modelshttp://unmethours.com/question/36131/controlling-the-zone-thermostat-with-thermal-comfort-models/I intend to model the required heating and cooling energy of my building based on the thermal comfort thermostat control (ZoneControl : Thermostat: Thermal comfort). The geometry and relevant input data is provided with OpenStudio (OS). As OS does not provide the option of controlling the zone thermostat through thermal comfort models, I want to further manipulate the input with EP Launch and IDF Editor. My questions are:
(1) Does the ZoneControl: Thermostat: Thermal Comfort object in EP work with ideal air loads?
(2) How do I provide the appropriate Thermal Comfort Control Type Schedule input? Do I need to create an additional schedule? If yes, what type of schedule is this (e.g. fractional)?
I checked the EP input output reference and after a few attempts with the simulation I got stuck, as my input was incorrect and it terminated. The usual workflow of resolving input errors did not work this time. So the main object of this question is to get some feedback of somebody, who is familiar with modeling the zone thermostat based on thermal comfort models in EP.
DavidFGGMon, 10 Dec 2018 03:53:55 -0600http://unmethours.com/question/36131/Energy consumption does not change with different wall constructionhttp://unmethours.com/question/36127/energy-consumption-does-not-change-with-different-wall-construction/I assigned three thermal zones and set up all the building construction in OpenStudio. when I run the simulation, I found the U-value of wall, roof and floor do not affect the total energy consumption of my model. No matter what U-value I use, the model output stays the same.wendigoZSun, 09 Dec 2018 21:18:53 -0600http://unmethours.com/question/36127/RTUs with constant fanshttp://unmethours.com/question/35833/rtus-with-constant-fans/I have an existing building I am modelling. There are a few RTUs that the building owners have decided to run the fan on constant. The heating and/or cooling still operates through thermostats, just the fans are on constant.
whats the best way to model this in OS?
![image description](/upfiles/15426756362877387.png)
**Update**: To clarify, all my air loops in my model have the fans running constantly. My intent is to make the fans follow the Zone thermostat. Example, if there is a call for heating, turn on the fan, once the setpoint has been met, turn off the fan. I have been trying to figure this out through Setpoint Managers, I just can't seem to make it work.re-measureMon, 19 Nov 2018 19:02:04 -0600http://unmethours.com/question/35833/OpenStudio Simulation Went Wrong. Help, Please!http://unmethours.com/question/36114/openstudio-simulation-went-wrong-help-please/Dear all,
I have been trying to use OpenStudio to do a simulation for my academic project. So far I have followed the step by step tutorial on youtube channel of NRELOpenStudio. I created my model and set my building envelope, construction and so on.
The building is 19,075 ft^2 community center in North Territories.
First run, I used ASHRAE 2009 building envelope for a small hotel, and I got a huge total site energy value of 7,605,800 kBtu.
Second run, I modified the building envelope to have higher (much higher) R-value, and I only got a slightly smaller number of 7,605,000 kBtu.
The result also shows that 91% of the energy is used for heating the building. I have no idea what went wrong with the model and other parameters. I have attached my testing model in this post if you would like to take a look. I will appreciate that you can leave any advice or help me out with this.
my testing model:
https://drive.google.com/open?id=1jOY0ehQI8UgZ4ZySzsARKIp5E8--PkrzwendigoZSat, 08 Dec 2018 01:17:13 -0600http://unmethours.com/question/36114/Natural ventilation simulation resultshttp://unmethours.com/question/36097/natural-ventilation-simulation-results/Hi all, I'm a very new OpenStudio user.
I'm trying to simulate an apartment building with ''natural-ventilation'' to evaluate which spaces are uncomfortable.
I've modelled the building in ''sketchup-openstudio'' plug-in, and OS runs and gives the results.
In OS thermal zones I've applied natural ventilation under zone equipment.
I've run a simulation without and with the natural ventilation to different thermal zones and this is what I get:
1. No natural ventilation in blue, with natural ventilation in orange
![alt text](/Z:\035 Surrey Crescent\6 Sketchup\Openstudio\Snippets for forum/001_Nat vent simulation.JPG "natural vent results 1")
2. I've noticed that changing ''minimum-indoor-temperature'' to 18 or 25 affects the zone air temperature in a way that I was not expecting. There is no other mechanical ventilation added therefore I don't understand where the additional heat is coming from during the winter time.
![alt text](/Z:\035 Surrey Crescent\6 Sketchup\Openstudio\Snippets for forum/002_Nat vent simulation.JPG "natural vent results 2")
What I was trying to achieve was to activate natural ventilation in summer to reduce overheat and reduce it in winter to retain heat. I've tried to apply a schedule to simulate that as discussed [in this post](https://unmethours.com/question/1169/openstudio-simulation-of-natural-ventilation/) but I was not successful.
Thanks for your help and let me know if I should clarify something.
matteo-gThu, 06 Dec 2018 16:35:57 -0600http://unmethours.com/question/36097/OpenStudio Spaces in Sketchup - Surface Matchinghttp://unmethours.com/question/36078/openstudio-spaces-in-sketchup-surface-matching/Open Studio: Having a problem with OpenStudio Spaces drawn in Sketchup.
I am putting together a two-story data center; see attached pictures. Corridor space surrounds various server rooms like a square donut with the servers as the filling on both floors. Note: the top floor also maintains a 3 ft plenum.
When I match surfaces and run the model, OpenStudio automatically fills the corridor "donut" for some reason, overlapping with the server rooms (see the 'exploded' pictures). Is there any way to prevent this from happening?
As a work around, I have split the rectangular donut with seams, and then joined them as one thermal space being run by the same AHU equipment. This seems to yield accurate enough results. Is this the correct approach if OpenStudio cannot handle donut or courtyard-like spaces?
Initial Data Center Assembly
![image description](/upfiles/15440583505588641.jpg)
Exploded Data Center Corridors BEFORE Surface Matching
![image description](/upfiles/15440583997655415.jpg)
Exploded Data Center Corridors AFTER Surface Matching
![image description](/upfiles/15440584097051338.jpg)
Work around = Split Rectangular Donut with Seams, Reassemble with Shared Thermal Zones, Surface Match, and then Run Model
![image description](/upfiles/15440584198816862.jpg)mcdonaa1Wed, 05 Dec 2018 19:05:05 -0600http://unmethours.com/question/36078/measure manager crashing in starthttp://unmethours.com/question/35851/measure-manager-crashing-in-start/ I read similar discussion on this topic, however in my case, the measure manager crashes when I want to open the OpenStudio, and before I want to run a any measure.
Using OS 2.7, and also I was able to use the measures before with the current installation and I am not sure what has been changed?s_pourmTue, 20 Nov 2018 10:45:10 -0600http://unmethours.com/question/35851/I had installed and uninstalled the programs, but nothing happens,http://unmethours.com/question/36060/i-had-installed-and-uninstalled-the-programs-but-nothing-happens/ I had installed and uninstalled the programs (sketch 2018 and Open Studio 2.7.0) , but nothing happens. The open Studio not appear in sketch....could you help me please?olmontoyTue, 04 Dec 2018 22:28:04 -0600http://unmethours.com/question/36060/unmet clg and unmet clg -occ differencehttp://unmethours.com/question/36030/unmet-clg-and-unmet-clg-occ-difference/Hi,
The meaning of unmet clg and unmet clg - occ seems self - explanatory but I am having a hard time making a difference between them. Could you please confirm the meaning of those considering that for one of my thermal zones, I am getting the following response:
- unmet Htg: 0
- unmet Htg - Occ: 0
- unmet Clg: 7400
- unmet Clg - Occ: 2947
Do they make sense? The addition of which numbers should add up to 8760?
Thanks,mfathMon, 03 Dec 2018 12:29:13 -0600http://unmethours.com/question/36030/U factor of CMU wall in the components loaded into Openstudiohttp://unmethours.com/question/35904/u-factor-of-cmu-wall-in-the-components-loaded-into-openstudio/ When I loaded a component "Concrete Block - 8 in. - 105 lb/ft3 - Solid Grouted" from the BCL online, and then run the model, I can see that the U factor with film is 3.15 W/m2K, which is 0.5547 Btu/ft2hR. But per the TEK note 06-02C1 from NCMA, it should be 0.527 Btu/ft2hR. What makes the difference?
Thanks!Li_LiuSat, 24 Nov 2018 18:02:49 -0600http://unmethours.com/question/35904/Why is EnergyPlus only reporting peak heating load?http://unmethours.com/question/35868/why-is-energyplus-only-reporting-peak-heating-load/It seems that in the results table, EnergyPlus only defaults to outputting information for the heating design day or peak heating day. Why isn't it reporting information for July 21st as well as January 21st/is this something I can rectify?
In this case I'm running just for sizing days and am using Ideal Air Loads.
[![image description](/upfiles/1542818577621207.jpg)](/upfiles/1542818577621207.jpg)![image description](/upfiles/1543261537432482.jpg)jmbattisWed, 21 Nov 2018 10:45:49 -0600http://unmethours.com/question/35868/fan operation of air loop to follow Heating/Cooling Thermostat Scheduleshttp://unmethours.com/question/35971/fan-operation-of-air-loop-to-follow-heatingcooling-thermostat-schedules/I'm having a hard time understanding setpoints and Availability Managers for controlling fan operation time in Packaged rooftop or Air loops. There is no fresh air coming into my building, so the fan operation should only work to meet heating/cooling setpoints within zone thermostats. I've played around a bit with AVM temperature Turn Off, this seems to do something, although it is not intuitive which node I should be picking and what temperature the turn off should be set to, in addition the AVM turn off would work for cooling season and not for heating season, or vice versa, depending on which AVM turn off is chosen.
It seems like this would be the simplest operation of a rooftop unit. Example, when there is a call for heat -> turn the fan on, when there is a call for cooling -> turn the fan on, when there are no thermostat calls -> fan remains off.
I've looked through the definitions for Setpoint Managers and AVM, so I am a bit familiar with what they are capable of. Below are some screenshots and my model.
![image description](/upfiles/15435137384378009.png)
![image description](/upfiles/15435137795919125.png)
![image description](/upfiles/15435137922332089.png)
RTU 8 - Lobby: Air System Fan Energy
![image description](/upfiles/15435138156337239.png)re-measureThu, 29 Nov 2018 11:51:32 -0600http://unmethours.com/question/35971/Query the number of model stories using OpenStudio sdkhttp://unmethours.com/question/35959/query-the-number-of-model-stories-using-openstudio-sdk/I am wondering if it is possible to get the number of stories in a model using the OpenStudio SDK, I thought that I could do this using the standardsNumberOfStories property in the Building class reference.
See: https://openstudio-sdk-documentation.s3.amazonaws.com/cpp/OpenStudio-2.7.0-doc/model/html/classopenstudio_1_1model_1_1_building.html
But it just returns an optional int and to_s or to_i return nothing, I seem to have found a dead end. Is there any way I can query the number of stories from the model using the SDK?
antonszilasiWed, 28 Nov 2018 17:48:42 -0600http://unmethours.com/question/35959/How is fan power calculatedhttp://unmethours.com/question/35924/how-is-fan-power-calculated/In air loops and packaged rooftop systems the input values for a fan, seen below, somehow equate to actual fan power, also seen here. What's the equation that OpenStudio/EnergyPlus uses to calculate the fan energy? Is there anywhere one can simply input the actual/measured fan energy?
![image description](/upfiles/15432772893970449.png)
![image description](/upfiles/15432773117170439.png)re-measureMon, 26 Nov 2018 18:09:28 -0600http://unmethours.com/question/35924/Heating airflow sizing for AirTerminal:SingleDuct:VAV:Reheathttp://unmethours.com/question/35919/heating-airflow-sizing-for-airterminalsingleductvavreheat/I have a 100% OA airloop with several dozen zone level AirTerminal:SingleDuct:VAV:Reheat objects with hot water reheat coils. My issue lies in the design heating airflow that is being passed to the terminal unit and subsequently used to size the heating coil. My heating coils are undersizing because they're seeing a calculated airflow as opposed to my user-defined heating airflow.
The terminal unit objects have a 'Scheduled' Zone Minimum Air Flow Method and a corresponding fractional schedule assigned. I have the target cooling and heating flows hardcoded at the zone (Flow/Zone). The zone appears to see the correct heating flow (based on HVAC Sizing Summary), the terminal unit is passed the correct Maximum Air Flow Rate, but the heating coil is passed the incorrect heating airflow. I have replicated this issue in a test model with a min flow schedule at 1.0 (100%) during all operating hours. The correct airflow is passed with both the 'Constant' and 'FixedFlowRate' input method so this appears to be specific to only the 'Scheduled' method.
This is being constructed in OpenStudio, but it appears everything is being passed as it should to EnergyPlus. My hunch is that this is an EnergyPlus issue, but its difficult to tell for sure.
jt1234Mon, 26 Nov 2018 13:20:14 -0600http://unmethours.com/question/35919/Fenestration Solar value 0http://unmethours.com/question/35378/fenestration-solar-value-0/ Hello everyone,
I am using CBECC-Com 2016.3.0 SP1 version( http://bees.archenergy.com/resources....) Large office building and using LA as my weather file. I ran the cbecc-com model as is without making any changes to it and extracted an energy plus file. I wanted to understand the cooling peak load component so ran the facility component as well air loop summary report. I was surprised to see that the 'fenestration solar' component was zero. What could be the reason? Am I missing something? I have attached a link to the model-
![image description](/upfiles/15409613053968614.jpg)
https://drive.google.com/open?id=1QH6hfoFPKaQqJwV7Z_urCXrMnILGvAEc
Thanks
Ranjani RanjaniTue, 30 Oct 2018 23:53:51 -0500http://unmethours.com/question/35378/Surface intersecting and matching problemhttp://unmethours.com/question/27409/surface-intersecting-and-matching-problem/I have tried to solve this problem using the information posted by other users with similar issues, however I haven't had any luck. After performing the surface intersection/surface matching function in SketchUp the ceiling of the first story and the floor of the second story seem to be intersected with one another and they are not being counted as interior surfaces.
![image description](/upfiles/15090329921090251.png)gnavaWed, 25 Oct 2017 15:33:32 -0500http://unmethours.com/question/27409/